unfairness UK /ʌnˈfɛənəs/US /ʌnˈfɛɚnəs/ noun2 •The state of being unfair; lack of justice.The reason why fairness in taxation matters is institutionalized unfairness rots society from the inside, and the social order and economy eventually collapse. — 2024 •An unjust act or situation. formsunfairnesses